diff --git a/includes/defaults.inc.php b/includes/defaults.inc.php
index db087244b2..4afa3edc8e 100644
--- a/includes/defaults.inc.php
+++ b/includes/defaults.inc.php
@@ -704,9 +704,10 @@ $config['eventlog_purge'] = 30;
 $config['authlog_purge'] = 30;
 // Number in days of how long to keep authlog entries for.
 $config['perf_times_purge'] = 30;
-// Number in days of how long to keep performace pooling stats  entries for.
-$config['device_perf_purge'] = 30;
+// Number in days of how long to keep performace polling stats  entries for.
+$config['device_perf_purge'] = 7;
 // Number in days of how long to keep device performance data for.
+
 // Date format for PHP date()s
 $config['dateformat']['long'] = 'r';
 // RFC2822 style